April 18, 2013, 12:33 PM — Here's how you can install the Zukitwo Cupertino theme to your Ubuntu 13.04 system.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each.
sudo add-apt-repository ppa:noobslab/themes
sudo apt-get update
sudo apt-get install zukitwo-cupertino-gs
For more, see the original article at the link below.